what u plan on doing in the future will impact on the choice u make,
if u just keep the car how it is then just get a nistune, will provide a decent level of tunning to some good results, clean up how the car drives
or if u plan on going further with bigger turbos, injectors n the like choices will go from the simple but reliable power fc costing usually round $1000+ tunning right thruogh to haltec, motec etc which will cost u a shit load more
but as said above if u simply went into the forced induction section and used the search function all the answers u could ever want will show up.
This type of question have been covered many times before, thats y people get the shits when it is continually asked